<script setup lang="ts">
import { useCartStore, useMemberStore } from '@/stores'
import { useXtxGuess } from '@/composables'
import type { CartItem } from '@/types/cart'
import { ref, watch } from 'vue'
import type { InputNumberBoxEvent } from '@/components/vk-data-input-number-box/vk-data-input-number-box'
const member = useMemberStore()
const cartStore = useCartStore()
const cart = ref<CartItem[]>(cartStore.cart)
const clearCart = (id: string) => {
  uni.showModal({
    title: '提示',
    content: '是否删除该商品？',
    success: (res) => {
      if (res.confirm) {
        cartStore.deleteCart(id)
      }
    },
  })
}
const onChangeCount = (e: InputNumberBoxEvent) => {
  const { index, value } = e
  cartStore.changeCount(index, value)
}
const onCheck = (id: string) => {
  cartStore.changeChecked(id)
}
const allChecked = () => {
  cartStore.checkAll()
}
const { guess, onScrollToLower } = useXtxGuess()
watch(cartStore, (newStore) => {
  cart.value = newStore.cart
})
</script>

<template>
  <scroll-view @scrolltolower="onScrollToLower" scroll-y enable-back-to-top class="scroll-view">
    <!-- 已登录: 显示购物车 -->
    <template v-if="member.profile">
      <!-- 购物车列表 -->
      <view class="cart-list" v-if="cart.length > 0">
        <!-- 优惠提示 -->
        <view class="tips">
          <text class="label">单件75折</text>
          <view class="desc">
            <view>
              已优惠<text class="discount">{{ cartStore.discount }}</text
              >元，</view
            >
            <view class="countdown"
              ><uni-countdown :show-day="false" :font-size="13" :hour="24" color="#cf4444" /><text
                >后恢复原价</text
              ></view
            >
          </view>
        </view>
        <!-- 滑动操作分区 -->
        <uni-swipe-action>
          <!-- 滑动操作项 -->
          <uni-swipe-action-item v-for="item in cart" :key="item._id" class="cart-swipe">
            <!-- 商品信息 -->
            <view class="goods">
              <!-- 选中状态 -->
              <text
                class="checkbox"
                @tap="onCheck(item._id)"
                :class="{ checked: item.selected }"
              ></text>
              <view class="navigator">
                <image mode="aspectFill" class="picture" :src="item.image"></image>
                <view class="meta">
                  <view class="name ellipsis">{{ item.goods_name }}</view>
                  <view class="attrsText ellipsis">{{ item.sku_name_arr.join(' ') }}</view>
                  <view class="price">{{ (item.price / 100).toFixed(2) }}</view>
                </view>
              </view>
              <!-- 商品数量 -->
              <view class="count">
                <vk-data-input-number-box
                  v-model="item.buy_num"
                  :min="1"
                  :max="10"
                  :index="item._id"
                  @change="onChangeCount"
                />
              </view>
            </view>
            <!-- 右侧删除按钮 -->
            <template #right>
              <view class="cart-swipe-right">
                <button class="button delete-button" @tap="clearCart(item._id)">删除</button>
              </view>
            </template>
          </uni-swipe-action-item>
        </uni-swipe-action>
      </view>
      <!-- 购物车空状态 -->
      <view class="cart-blank" v-else>
        <image src="/static/images/blank_cart.png" class="image" />
        <text class="text">再忙再累也要犒赏自己</text>
        <navigator open-type="switchTab" url="/pages/index/index" hover-class="none">
          <button class="button">去首页看看</button>
        </navigator>
      </view>
      <!-- 吸底工具栏 -->
      <view class="toolbar">
        <text
          v-if="cartStore.cart.length > 0"
          @tap="allChecked"
          class="all"
          :class="{ checked: cartStore.isAllChecked }"
          >全选</text
        >
        <text class="text">合计:</text>
        <text class="amount">{{ cartStore.discountAmount }}</text>
        <view class="button-grounp">
          <view class="button payment-button" :class="{ disabled: cartStore.totalNum === 0 }">
            去结算({{ cartStore.totalNum }})
          </view>
        </view>
      </view>
    </template>
    <!-- 未登录: 提示登录 -->
    <view class="login-blank" v-else>
      <text class="text">登录后可查看购物车中的商品</text>
      <navigator url="/pages/login/login" hover-class="none">
        <button class="button">去登录</button>
      </navigator>
    </view>
    <!-- 猜你喜欢 -->
    <XtxGuess ref="guess"></XtxGuess>
    <!-- 底部占位空盒子 -->
    <view class="toolbar-height"></view>
  </scroll-view>
</template>

<style lang="scss">
// 根元素
:host {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: #f7f7f8;
}

// 滚动容器
.scroll-view {
  flex: 1;
}

// 购物车列表
.cart-list {
  padding: 0 20rpx;

  // 优惠提示
  .tips {
    display: flex;
    justify-content: space-between;
    align-items: center;
    line-height: 1;
    margin: 30rpx 10rpx;
    font-size: 26rpx;
    color: #666;

    .label {
      color: #fff;
      padding: 7rpx 15rpx 5rpx;
      border-radius: 4rpx;
      font-size: 24rpx;
      background-color: #27ba9b;
      margin-right: 10rpx;
    }
    .desc {
      display: flex;
      align-items: center;
      .countdown {
        display: flex;
        align-items: center;
      }
      .discount {
        color: #cf4444;
      }
    }
  }

  // 购物车商品
  .goods {
    display: flex;
    padding: 20rpx 20rpx 20rpx 80rpx;
    border-radius: 20rpx;
    background-color: #fff;
    position: relative;

    .navigator {
      display: flex;
    }

    .checkbox {
      position: absolute;
      top: 0;
      left: 0;

      display: flex;
      align-items: center;
      justify-content: center;
      width: 80rpx;
      height: 100%;

      &::before {
        content: '\e6cd';
        font-family: 'erabbit' !important;
        font-size: 40rpx;
        color: #444;
      }

      &.checked::before {
        content: '\e6cc';
        color: #27ba9b;
      }
    }

    .picture {
      width: 170rpx;
      height: 170rpx;
    }

    .meta {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      margin-left: 20rpx;
    }

    .name {
      height: 72rpx;
      font-size: 26rpx;
      color: #444;
    }

    .attrsText {
      line-height: 1.8;
      padding: 0 15rpx;
      font-size: 24rpx;
      align-self: flex-start;
      border-radius: 4rpx;
      color: #888;
      background-color: #f7f7f8;
    }

    .price {
      line-height: 1;
      font-size: 26rpx;
      color: #444;
      margin-bottom: 2rpx;
      color: #cf4444;

      &::before {
        content: '￥';
        font-size: 80%;
      }
    }

    // 商品数量
    .count {
      position: absolute;
      bottom: 20rpx;
      right: 5rpx;

      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 220rpx;
      height: 48rpx;

      .text {
        height: 100%;
        padding: 0 20rpx;
        font-size: 32rpx;
        color: #444;
      }

      .input {
        height: 100%;
        text-align: center;
        border-radius: 4rpx;
        font-size: 24rpx;
        color: #444;
        background-color: #f6f6f6;
      }
    }
  }

  .cart-swipe {
    display: block;
    margin: 20rpx 0;
  }

  .cart-swipe-right {
    display: flex;
    height: 100%;

    .button {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 50px;
      padding: 6px;
      line-height: 1.5;
      color: #fff;
      font-size: 26rpx;
      border-radius: 0;
    }

    .delete-button {
      background-color: #cf4444;
    }
  }
}

// 空状态
.cart-blank,
.login-blank {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 60vh;
  .image {
    width: 300rpx;
    height: 300rpx;
  }
  .text {
    color: #444;
    font-size: 26rpx;
    margin: 20rpx 0;
  }
  .button {
    width: 240rpx !important;
    height: 60rpx;
    line-height: 60rpx;
    margin-top: 20rpx;
    font-size: 26rpx;
    border-radius: 60rpx;
    color: #fff;
    background-color: #27ba9b;
  }
}

// 吸底工具栏
.toolbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: var(--window-bottom);
  z-index: 1;

  height: 100rpx;
  padding: 0 20rpx;
  display: flex;
  align-items: center;
  border-top: 1rpx solid #ededed;
  border-bottom: 1rpx solid #ededed;
  background-color: #fff;
  box-sizing: content-box;

  .all {
    margin-left: 25rpx;
    font-size: 14px;
    color: #444;
    display: flex;
    align-items: center;
  }

  .all::before {
    font-family: 'erabbit' !important;
    content: '\e6cd';
    font-size: 40rpx;
    margin-right: 8rpx;
  }

  .checked::before {
    content: '\e6cc';
    color: #27ba9b;
  }

  .text {
    margin-right: 8rpx;
    margin-left: 32rpx;
    color: #444;
    font-size: 14px;
  }

  .amount {
    font-size: 20px;
    color: #cf4444;

    .decimal {
      font-size: 12px;
    }

    &::before {
      content: '￥';
      font-size: 12px;
    }
  }

  .button-grounp {
    margin-left: auto;
    display: flex;
    justify-content: space-between;
    text-align: center;
    line-height: 72rpx;
    font-size: 13px;
    color: #fff;

    .button {
      width: 240rpx;
      margin: 0 10rpx;
      border-radius: 72rpx;
    }

    .payment-button {
      background-color: #27ba9b;

      &.disabled {
        opacity: 0.6;
      }
    }
  }
}
// 底部占位空盒子
.toolbar-height {
  height: 100rpx;
}
</style>
